Headset



FIG. 1 is a front view of a headset showing my new design;

FIG. 2 is a perspective rear view thereof;

FIG. 3 is a perspective front view thereof;

FIG. 4 is a second perspective rear view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a headset, as shown and described. 